205844 has 6 divisors (see below), whose sum is σ = 360234. Its totient is φ = 102920.

The previous prime is 205837. The next prime is 205847. The reversal of 205844 is 448502.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 36100 = 412^2 + 190^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 205844.

It is not an unprimeable number, because it can be changed into a prime (205847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25727 + ... + 25734.

It is an arithmetic number, because the mean of its divisors is an integer number (60039).

2²⁰⁵⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

205844 is a deficient number, since it is larger than the sum of its proper divisors (154390).

205844 is a wasteful number, since it uses less digits than its factorization.

205844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51465 (or 51463 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 205844 is about 453.7003416353. The cubic root of 205844 is about 59.0444938719.

The spelling of 205844 in words is "two hundred five thousand, eight hundred forty-four".